Originally Posted by birmansandbettas
I was minding my own business when my POS Coralife fixture made a sound like a dying goose swallowing a firecracker. acrylic cover.
People are speculating, which is valid, but if you want to try to fix this - more information is needed.
Coralife makes and made a number of different fixtures. Your description of the bulb suggests a power compact not T5.
What fixture do you have?
T5NO single tube, T5NO double tube, T5HO single tube, T5HO double tube, single tube power compact, double tube power compact, four tube power compact? What wattage bulb(s)